libxt_recent: do not allow both --set and --rttl

Reported-by: Erich Schubert <erich@debian.org>
Reference: Debian bug #346034

"I was using the --rttl option in my --set line; this caused all
incoming ssh connections to be rejected; --rttl is only to be used
with --rcheck and --update."

Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
Signed-off-by: Patrick McHardy <kaber@trash.net>
1 file changed